(19)

(11)

EP 4 584 424 A2

(12)

(88) Date of publication A3: 16.05.2024 (43) Date of publication: 16.07.2025 Bulletin 2025/29 (21) Application number: 23768271.1 (22) Date of filing: 07.09.2023

(51) International Patent Classification (IPC):  C23F 13/22(2006.01) E02B 17/00(2006.01) G01N 17/02(2006.01) B63B 59/04(2006.01) (52) Cooperative Patent Classification (CPC): C23F 13/22; C23F 2213/31; G01N 17/02; E02B 17/0026; B63B 59/04 (86) International application number: PCT/EP2023/074636 (87) International publication number: WO 2024/052489 (14.03.2024 Gazette 2024/11)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 07.09.2022 EP 22194348 (71) Applicant: Volvo Penta Corporation 405 08 Göteborg (SE)	(72) Inventors: RÄFTEGÅRD, Viktor 448 31 Floda (SE) KÄLLVIK, Johan 441 74 Sollebrunn (SE) (74) Representative: Valea AB  Box 1098 405 23 Göteborg 405 23 Göteborg (SE)